Impact of comorbid depression on treatment adherence and long-term urinary function following surgery for benign prostatic hyperplasia

Table 4 Comparison of improvement in postoperative urinary function parameters between both groups

Indicator	Comorbidity group (n = 65)	Non-comorbidity group (n = 691)	t value	P value
Improvement in IPSS score (points)	15.17 ± 4.23	20.54 ± 5.12	9.876	< 0.001
Improvement in QOL score (points)	2.67 ± 0.89	3.86 ± 1.05	10.234	< 0.001
Improvement in Qmax (mL/second)	7.73 ± 3.15	12.68 ± 3.89	12.567	< 0.001
Improvement in PVR (mL)	91.05 ± 42.35	114.62 ± 48.76	4.789	< 0.001

Large SD suggest substantial individual variability in post-void residual urine volume improvement, which may be influenced by factors other than depression. IPSS: International Prostate Symptom Score; QOL: Quality of Life; Q_max: Maximum flow rate; PVR: Post-void residual urine volume.